Overflow: hidden

There should be a green box, no red visible, and the word 'fail' should not appear.

FAIL
LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD FAIL
Should be visible
FAIL
LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD FAIL
Should not be visible
LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD FAIL
LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD FAIL
LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD FAIL
Should not be visible
Don't clip within a clipping parent using 'clip: none'. LONG_WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORD
Should be visible
Force clipping even though contents don't overflow using 'clip: always'.
Should not be visible